Fig. 3

Spinal pain by visual analog scale (VAS 0–100 mm) comparing traditional NSAIDs versus iCOX2 in patients with ankylosing spondylitis: meta-analysis of six randomized clinical trials. Subtitle: (1) Celecoxib 200 mg vs ketoprofen 200 mg. (2) Celecoxib 400 mg vs diclofenac 75 mg. (3) Etoricoxib 90 mg vs naproxen 1000 mg. (4) Celecoxib 200 mg vs diclofenac 50 mg. (5) Etoricoxib 90 mg vs naproxen 1000 mg. (6) Celecoxib 200 mg vs diclofenac 75 mg